Run with empty host for dual stack mode

Author: white-gecko

Containerfile

@@ -26,4 +26,4 @@ COPY --from=builder ${VIRTUAL_ENV} ${VIRTUAL_ENV}
 COPY sparql_file.py ./sparql_file.py
 COPY README.md ./README.md
 
-CMD ["uvicorn", "sparql_file:app", "--host", "0.0.0.0", "--port", "8080"]
+CMD ["uvicorn", "sparql_file:app", "--host", "", "--port", "8080"]